NBBIB-497 Add dynamic query to cron() reference year sync

custom/modules/nbbib_core/nbbib_core.module

@@ -34,24 +34,31 @@ function nbbib_core_cron() {
   $current_minute = date('i');
   $datestamp = date('c');
 
-  // if (TRUE) { // CRON DEV - RUN EVERY TIME!
+  if (TRUE) { // CRON DEV - RUN EVERY TIME!
   // If it's between 12:45-1am server time...
-  if ($current_hour < 1 and $current_minute > 44) {
+  //if ($current_hour < 1 and $current_minute > 44) {
     \Drupal::logger('nbbib_core')->notice("NBBIB maintenance CRON job started at [$datestamp].");
     // Publication year config sync.
+    // Load reference types from configuration.
+    $config = \Drupal::config('nbbib_core.settings');
+    $types = $config->get('nbbib_types');
+    $types = array_column($types, 'entity');
+    $refs = '';
+    $i = 1;
+
     \Drupal::logger('nbbib_core')->notice("Starting publication year facet sync...");
-    $query = \Drupal::database()->query(
-      'SELECT MIN(publication_year) AS db_min
-      FROM (
-      SELECT publication_year FROM yabrm_book t1 WHERE publication_year > 0 AND status = 1
-      UNION
-      SELECT publication_year FROM yabrm_journal_article t2 WHERE publication_year > 0 AND status = 1
-      UNION
-      SELECT publication_year FROM yabrm_book_section t3 WHERE publication_year > 0 AND status = 1
-      UNION
-      SELECT publication_year FROM yabrm_thesis t4 WHERE publication_year > 0 AND status = 1
-      ) AS t5'
-    );
+    foreach($types as $type) {
+      $refs .= "
+        SELECT publication_year FROM $type t$i 
+        WHERE publication_year > 0 
+        AND status = 1 
+        UNION";
+      $i++;
+    }
+
+    $refs = substr($refs, 0, -5);
+    $qtext = "SELECT MIN(publication_year) AS db_min \nFROM ($refs) AS t$i";
+    $query = \Drupal::database()->query($qtext);
     $db_min = $query->fetchAll()[0]->db_min;
     $dt_max = date('Y');
     // Check/configure new edge values for facet.